<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<title></title>
</head>
<body>
	<script type="text/javascript">
		function fn(){
			console.log("函数")
		} 
		console.log(typeof fn)//function
	</script>
</body>
</html>